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Table 5 Survey results of participants’ subjective ease of use

From: Comparison of five video-assisted intubation devices by novice and expert laryngoscopists for use in the aeromedical evacuation environment

Question BH-adjusted P-value Ranking of devices
AWS GlideScope C-MAC Coopdech Airtraq
Novice group
 Overall ease of use of the device 0.180 4.7 4.8 4.3 3.8 3.7
 The ease of use of this device under the following circumstance
  NAL Stanchion 0.130 4.9 4.7 4.9 4.2 4
  NAL Ground 0.110 4.6 4.4 4.1 3.5 3.9
  DAL Stanchion 0.290 4.6 4.4 4.5 3.8 3.9
  DAL Ground 0.001 4.6 3.9 3.2 3.2 3.6
  DAB Stanchion 0.130 4.6 4.4 4.4 3.7 2.9
  DAB Ground 0.130 4.6 4.6 3.3 3.2 3.2
Expert group
 Overall ease of use of the device 0.400 4.4 4.7 4.6 4.2 3.6
 The ease of use of this device under the following circumstance
  NAL stanchion 0.047 4.7 4.7 4.4 4.0 4.6
  NAL ground 0.120 4.5 4.7 4.2 3.3 4.4
  DAL stanchion 0.120 4.6 4.3 4.0 3.9 4.0
  DAL ground 0.088 4.5 3.8 3.4 2.2 4.0
  DAB stanchion 0.001 4.4 4.3 3.6 3.9 3.0
  DAB ground 0.004 4.5 4.2 3.6 3.3 3.1
  1. NAL Normal airway with lights on, DAL Difficult airway with lights on, DAB Difficult airway with blackout conditions
  2. All values are an average of ratings based on a 5-point Likert scale ranging from “5 = Extremely easy” to “1 = Extremely difficult”. BH-adjusted P-value <0.05 indicated statistical significance